Hello all,

I’m having something going on with my occupancy sensors. I use Marklin c-track and Marklin s 88’s. They have all worked perfectly, but recently, a few of the sensors are acting erratically. I have a total of three s-88’s all connected to each other then connected directly to the bottom of the CS3+.

Here are examples of what is happening.
1) When I first start up the CS3, one of the occupancy shows occupied, even though it’s not.
2) There are times when some sections show unoccupied but are they are occupied. Other times they work fine.
3) There are times a section will correctly show occupied but after the train has left still shows occupied.

These are happening on at least 4 of the sensors so I do not think it’s a “track” or connection issue. The sensors acting up are all connected to one particular s-88.
I’m thinking maybe the s-88 needs to be “re-set” or “re-started” if there is such a thing? Is it possible that the s-88 is bad, corrupt?

Love to hear any ideas or similar experiences.

Thanks for reading

I have experienced similar features (1) on C track contact tracks, where the edge of an isolated rail all of a sudden touches a ground rail and (2) when a diode within the S88 ”diode trick” has broken.